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dezoksy [38]
3 years ago
12

An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a(n)

Chemistry
1 answer:
ss7ja [257]3 years ago
3 0
The answer is C: Valence electron
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Rank the following atoms by number of valence electrons. Rank from most to fewest valence electrons. To rank items as equivalent
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To count the number of valence electrons we look at the electronic configuration and add the electrons form the electronic shell with the highest principal quantum number.

Rb: [Kr] 5s¹ - 1 valence electron

Xe: [Kr] 5s² 4d¹⁰ 5p⁶ - 8 valence electrons

Sb: [Kr] 5s² 4d¹⁰ 5p³ - 5 valence electrons

I:    [Kr] 5s² 4d¹⁰ 5p⁵ - 7 valence electrons

In:  [Kr] 5s² 4d¹⁰ 5p¹ - 3 valence electrons

Rank from most to fewest valence electrons:

Xe > I > Sb > In > Rb

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Answer: B its most likely

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Physical properties are defined as the properties which can be observed without changing its chemical composition. For example: color, volume, and molecular weight. Chemical properties are defined as the properties which can be observed only after changing chemical identity of the substance.

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